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    1.
    发明专利
    未知

    公开(公告)号：DE69133401D1

    公开(公告)日：2004-07-29

    申请号：DE69133401

    申请日：1991-03-15

    Applicant: FUJITSU LTD

    Inventor： NODA TSUGIO ,  FUKUDA MASAHIRO ,  MURASHITA KIMITAKA

    IPC: G06F17/14 ,  G06F17/16 ,  H04N7/26 ,  H04N7/30

    Abstract: A dequantizer (616) obtains DCT coefficients by dequantizing the quantized DCT coefficient decoded by a decoder (612). An inverse DCT unit (620) receives the inverse DCT coefficient and stores the image data in a image data retainer (624). An adder (622) adds the image data output from the unit (620) with previous image data output from the image retainer. Independent claims are included for the following: (1) Image processing method; and (2) Image data restoring device.

    2.
    发明专利
    未知

    公开(公告)号：DE69416023D1

    公开(公告)日：1999-03-04

    申请号：DE69416023

    申请日：1994-03-10

    Applicant: FUJITSU LTD

    Inventor： SHIMIZU MASAYOSHI ,  NODA TSUGIO ,  MORIHARA TAKASHI

    IPC: H04N1/41 ,  H04N1/415 ,  H04N7/30

    Abstract: An image and code data compression apparatus (1) for compressing the image data and further compressing the code data which are compressed from the image data, the apparatus includes: a dividing unit (10) for receiving the image data and dividing them into a plurality of image data blocks; a transformation unit (11, 12) operatively connected to the dividing unit (10) for performing an orthogonal transformation to the image data block and calculating transformation co-efficients for every frequency component; a quantizing unit (13, 14) operatively connected to the transformation unit (11, 12) for quantizing the transformation co-efficients which are calculated by the transformation unit (11, 12) by using a quantized threshold value (Quv) which is set commonly to all image data, and calculating the quantized orthogonal transformation co-efficients; a coding unit (15) operatively connected to the quantizing unit (13, 14) for performing the variable length coding process for the quantized transformation co-efficients which are calculated by the quantizing unit (13, 14) and outputting the code data which are compressed from the image data; a detecting unit (16) operatively connected to at least one of above units (10 to 15) for detecting the complexity of the image data block; and a deleting unit (17) operatively connected to at least one of above units (10 to 15) and the detecting unit (16) for deleting the block image data having high complexity detected by the detecting unit.

    COMPUTER IMAGE DISPLAY SYSTEM
    4.
    发明专利
    COMPUTER IMAGE DISPLAY SYSTEM 未知

    公开(公告)号：GB2314750A

    公开(公告)日：1998-01-07

    申请号：GB9625992

    申请日：1996-12-13

    Applicant: FUJITSU LTD

    Inventor： SUZUKI SHOJI ,  MORI MASAHIRO ,  NODA TSUGIO ,  SHIMIZU MASAYOSHI ,  CHIBA HIROTAKA ,  SAKAI KENICHIRO

    IPC: G06F3/147 ,  G09F9/35 ,  G09G3/00 ,  G09G5/00 ,  H04N5/74 ,  H04N9/12 ,  G06F3/00

    Abstract: Image data from an upper apparatus is compressed by a compressing unit, the compressed image data is transferred to a display apparatus by a printer interface of a low speed, and the original image data is reconstructed by a decoding unit and displayed. The display apparatus is a projector and auxiliarily displays a second picture plane into a first picture plane for presentation by an independent liquid crystal panel. A phase transition type liquid crystal panel of a number of pixels and a high resolution is used to display the first picture plane and the image data is compressed and transferred and is displayed. As a second picture plane, a personal computer picture plane is transferred and displayed as it is.

    5.
    发明专利
    未知

    公开(公告)号：DE19516979C2

    公开(公告)日：1997-01-16

    申请号：DE19516979

    申请日：1995-05-09

    Applicant: FUJITSU LTD

    Inventor： NODA TSUGIO ,  SAKAI KENICHIRO

    IPC: H04N1/411 ,  G06T9/00 ,  H03M7/46 ,  H04N1/415 ,  H04N1/419 ,  G06K15/02

    Abstract: The present invention relates to a bit-map compressing method and a bit-map compressing device. The bit-map data compressing method includes a main scanning step for scanning bit-map data in a main scanning direction; a first region separating step for separating a region including black pixels and a region including no black pixels in line unit; a secondary scanning step for scanning in a secondary direction perpendicular to the main scanning direction; a second region separating step for separating a region including black pixels and a region including no black pixels, in column unit; and an encoding step for encoding as an element each region obtained in the first region separating step and the second region separating step. Bit-map can be transferred by effectively performing data compression on simple algorithm, without using special hardware.

    IMAGE DATA ENCODING SYSTEM
    6.
    发明专利
    IMAGE DATA ENCODING SYSTEM 未知

    公开(公告)号：CA2046544C

    公开(公告)日：1995-09-12

    申请号：CA2046544

    申请日：1991-07-09

    Applicant: FUJITSU LTD

    Inventor： NODA TSUGIO ,  FUKUDA MASAHIRO ,  MURASHITA KIMITAKA

    IPC: G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H04N7/12

    Abstract: An image data encoding system efficiently reconstructs an image through a progressive image buildup in stages. An original image is divided into blocks each having NXN picture elements, whose transformation coefficients are obtained by orthogonal transformations on their graduated values. The image data encoding system has a transformation coefficient memory for storing transformation coefficients; a mask information memory for storing mask information for masking transformation coefficients; a masker for masking the most significant bits of the transformation coefficients specified by mask information; a shift information memory storing quantization thresholds for quantizing the transformation coefficients; and a quantizer for quantizing the masked transformation coefficients per the quantization threshold. The quantization threshold can be given a value of 2 to an integer power, and quantization can be attained by shifting bits of the transformation coefficients towards less significant bits by that power.

    8.
    发明专利
    未知

    公开(公告)号：DE69133175T2

    公开(公告)日：2003-04-17

    申请号：DE69133175

    申请日：1991-03-15

    Applicant: FUJITSU LTD

    Inventor： NODA TSUGIO ,  FUKUDA MASAHIRO ,  MURASHITA KIMITAKA

    IPC: G06F17/14 ,  G06F17/16 ,  H04N7/26 ,  H04N7/30

    Abstract: A dequantizer (616) obtains DCT coefficients by dequantizing the quantized DCT coefficient decoded by a decoder (612). An inverse DCT unit (620) receives the inverse DCT coefficient and stores the image data in a image data retainer (624). An adder (622) adds the image data output from the unit (620) with previous image data output from the image retainer. Independent claims are included for the following: (1) Image processing method; and (2) Image data restoring device.

    9.
    发明专利
    未知

    公开(公告)号：DE69132552D1

    公开(公告)日：2001-04-12

    申请号：DE69132552

    申请日：1991-08-09

    Applicant: FUJITSU LTD

    Inventor： FUKUDA MASAHIRO ,  NODA TSUGIO

    IPC: H04N1/41 ,  G06T9/00 ,  H04N7/54 ,  H04N19/42 ,  H04N19/44 ,  H04N19/48 ,  H04N19/60 ,  H04N19/625 ,  H04N19/91 ,  H04N7/30

    Abstract: An image data reconstructing method and apparatus, adaptive to both progressive and sequential image buildup modes, reconstructs an orthogonally transformed image by dequantizing transform coefficients decoded from coded data of a continuous tone image, by causing the transform coefficients to have a common data structure through an attachment of a dummy signal representing a zero value DC element. The image data reconstructing method comprises a coded data decoding step, a common data structure one-dimensional quantized transform coefficient creating step, a one-to-two dimensional quantized transform coefficient transforming step, a dequantization threshold storing step, and a two-dimensional quantized transform coefficient dequantizing step. The image data reconstructing apparatus comprises a dummy signal generator for generating such dummy signals and a selector for selecting the dummy signals.

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